التفاصيل البيبلوغرافية
| العنوان: |
Low annual temperature likely prevents the Holarctic amphipod Gammarus lacustris from invading Lake Baikal. |
| المؤلفون: |
Vereshchagina, Kseniya, Kondrateva, Elizaveta, Mutin, Andrei, Jakob, Lena, Bedulina, Daria, Shchapova, Ekaterina, Madyarova, Ekaterina, Axenov-Gribanov, Denis, Luckenbach, Till, Pörtner, Hans-Otto, Lucassen, Magnus, Timofeyev, Maxim |
| المصدر: |
Scientific Reports; 5/18/2021, Vol. 11 Issue 1, p1-14, 14p |
| مصطلحات موضوعية: |
GAMMARUS lacustris, ATMOSPHERIC temperature, CLIMATE change, LACTATE dehydrogenase |
| مصطلحات جغرافية: |
LAKE Baikal (Russia) |
| مستخلص: |
Species with effective thermal adaptation mechanisms allowing them to thrive within a wide temperature range can benefit from climatic changes as they can displace highly specialized species. Here, we studied the adaptive capabilities of the Baikal endemic amphipods Eulimnogammarus verrucosus (Gerstfeld, 1858) and Eulimnogammarus cyaneus (Dybowsky, 1874) compared to the potential Holarctic Baikal invader Gammarus lacustris Sars, 1863 at the cellular level including the energy metabolism and the antioxidant system. All species were long-term exposed to a range of temperatures (1.5 °C to mimic winter conditions and the three species-specific preferred temperatures (i.e., 6 °C for E. verrucosus, 12 °C for E. cyaneus and 15 °C for G. lacustris). At 1.5 °C, we found species-specific metabolic alterations (i.e., significantly reduced ATP content and lactate dehydrogenase activity) indicating limitations on the activity level in the Holarctic G. lacustris. Although the two Baikal endemic amphipod species largely differ in thermal tolerance, no such limitations were found at 1.5 °C. However, the cold-stenothermal Baikal endemic E. verrucosus showed changes indicating a higher involvement of anaerobic metabolism at 12 °C and 15 °C, while the metabolic responses of the more eurythermal Baikal endemic E. cyaneus may support aerobic metabolism and an active lifestyle at all exposure temperatures. Rising temperatures in summer may provide a competitive advantage for G. lacustris compared to the Baikal species but the inactive lifestyle in the cold is likely preventing G. lacustris from establishing a stable population in Lake Baikal. [ABSTRACT FROM AUTHOR] |
|
Copyright of Scientific Reports is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder